111340091 has 2 divisors, whose sum is σ = 111340092. Its totient is φ = 111340090.

The previous prime is 111340087. The next prime is 111340181. The reversal of 111340091 is 190043111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111340091 - 2² = 111340087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111340081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55670045 + 55670046.

It is an arithmetic number, because the mean of its divisors is an integer number (55670046).

Almost surely, 2^111340091 is an apocalyptic number.

111340091 is a deficient number, since it is larger than the sum of its proper divisors (1).

111340091 is an equidigital number, since it uses as much as digits as its factorization.

111340091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 111340091 is about 10551.7814135813. The cubic root of 111340091 is about 481.0798763157.

The spelling of 111340091 in words is "one hundred eleven million, three hundred forty thousand, ninety-one".